linux-kernel - [PATCH v2 0/3] vdpa_sim_blk: several fixes for the vDPA block simulator

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Date:   Thu, 30 Jun 2022 17:32:18 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     virtualization@...ts.linux-foundation.org
Cc:     Jason Wang <jasowang@...hat.com>, linux-kernel@...r.kernel.org,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Eugenio Pérez <eperezma@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>
Subject: [PATCH v2 0/3] vdpa_sim_blk: several fixes for the vDPA block simulator

v2:
- Patch 2: restored previous behaviour, exiting the loop immediately if the
  request is malformed [Jason]
- Added Jason's A-b In patch 1 and 3

v1: https://lore.kernel.org/virtualization/20220621160859.196646-1-sgarzare@redhat.com/

The first two patches essentially limit the possibility of the guest
doing a DoS to the host.

The third makes the simulator more correct (following what we do in
vdpa_sim_net) by calling vringh_complete_iotlb() in the error path as well.

Stefano Garzarella (3):
  vdpa_sim_blk: use dev_dbg() to print errors
  vdpa_sim_blk: limit the number of request handled per batch
  vdpa_sim_blk: call vringh_complete_iotlb() also in the error path

 drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 44 ++++++++++++++++++----------
 1 file changed, 29 insertions(+), 15 deletions(-)

-- 
2.36.1